home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.electronics
- Path: sparky!uunet!charon.amdahl.com!amdahl!rtech!decwrl!ames!saimiri.primate.wisc.edu!sdd.hp.com!hp-cv!hp-pcd!hpspkla!long
- From: long@spk.hp.com (Jerry Long)
- Subject: Re: Zenith TV Problem
- Message-ID: <C1J4xq.11D@spk.hp.com>
- Sender: news@spk.hp.com
- Organization: Hewlett-Packard
- X-Newsreader: TIN [version 1.1.4 PL6]
- References: <1993Jan27.193724.5170@newssun.med.miami.edu>
- Date: Wed, 27 Jan 1993 20:29:49 GMT
- Lines: 32
-
- Dru Nelson (dnelson@newssun.med.miami.edu) wrote:
- :
- : Hello,
- :
- : I got this set which started taking time to warm up.
-
-
- if TV is rather new, this probably is relative to the CRT heater
- voltage. Does sound come on immediatly?
-
-
- : It makes a loud buzzing noise and creates sparks from
- : the ground "feelers" that touch the top right corner of the tube.
-
- these feelers are usually for static charge bleed-off. If you are seeing
- sparks from these, chances are the high voltage is present.
-
- : ... it leaves an ozone kind of smell. My only guess is that it
- : is the high voltage/sweep module.
- :
- again it sounds as though the high voltage is on due to the presence
- of ozone. I would start with the main power supply advancing to the
- secondary supplies which are part of the HOT circuity.
- It is also possible the HV has become non-regulated and sky-rocketing
- which would also give lots of sparks, noise, ozone etc..
-
-
- Good luck.
-
- Jerry Long @spk.hp.com
-
-
-